Leonid Oliker

Computer Staff Scientist
Future Technologies Group
Computational Research Division
Lawrence Berkeley National Laboratory

One Cyclotron Rd.
MS:50A-1148
Berkeley, CA 94720

510.486.6625
email

• S. Williams, J. Carter, L. Oliker, J. Shalf, K. Yelick, "Lattice Boltzmann Simulation Optimization
  on Leading Multicore Platforms", International Parallel & Distributed Processing Symposium (IPDPS) 2008.
  WINNER: Best paper application track
  [pdf]
  
  
• M. Wehner, L. Oliker, J. Shalf, "Towards Ultra-High Resolution Models of Climate and Weather", Internation Journal of High Performance Computing Applications (IJHPCA), April, 2008.
  [pdf]
  
  
• S. Ethier, W. M. Tang, R. Walkup, L. Oliker, "Large-Scale Gyrokenetic particle simulation of Microturbulence in Magnetically Confined Fusion Plasmas" , IBM Journal of Research and Development, 2008.
  [pdf]
  
  
• S. Williams, L. Oliker, R. Vuduc, J. Shalf, K. Yelick, J. Demmel, “Optimization of Sparse Matrix-Vector Multiplication  on Emerging Multicore Platforms”, SC07: International Conference for High-Performance Computing, Networking, Storage, and Analysis, 2007
  [pdf]
  
  
• J. Borrill, L. Oliker. J. Shalf, H. Shan, “Investigation Of Leading HPC I/O Performance  Using A Scientific-Application Derived Benchmark”, SC07: International Conference for High-Performance Computing, Networking, Storage, and Analysis, 2007
  [pdf]
  
  
• S. Kamil, A. Pinar, D. Gunter, M. Lijewski, L. Oliker, J. Shalf, "Reconfigurable Hybrid Interconnection for Static and Dynamic Scientific Applications", ACM International Conference on Computing Frontiers, 2007.
  [pdf]
  
  
• L. Oliker, A. Canning, J. Carter, C. Iancu, M. Lijewski, S. Kamil, J. Shalf, H. Shan, E. Strohmaier, S. Ethier, T. Goodale,"Scientific Application Performance on Candidate PetaScale Platforms", International Parallel & Distributed Processing Symposium (IPDPS) 2007.
  WINNER: Best paper application track
  [pdf]
• Also Chapter in: Petascale Computing: Algorithms and Applications (Chapman & Hall/Crc Computational Science Series) (Hardcover)
  by David A. Bader (Editor)
  [pdf]
  
  
• L. Oliker, J. Shalf, M. Wehner,"Climate Modeling at the Petaflop Scale using Semi-Custom Computing", SIAM Conference on Computational Science and Engineering, 2007.
  
  
• S. Kamil, K. Datta, S, Williams, L. Oliker, J. Shalf, K. Yelick, "Implicit and Explicit Optimizations for Stencil Computations" , Memory Systems Performance and Correctness (MSPC), 2006.
  [pdf]
  
  
• J. Carter, L. Oliker, J. Shalf, "Performance Evaluation of Scientific Applications on Modern Parallel Vector Systems ", VECPAR 2006.
  Highest ranked conference paper
  [pdf]
• Also: Lecture Notes in Computer Science, LNCS 4395, 2007, in Press
  [pdf]
  
  
• S. Williams, J. Shalf, L. Oliker, P. Husbands, S. Kamil, K. Yelick, "The Potential of the Cell Processor for Scientific Computing", ACM International Conference on Computing Frontiers, 2006.
  Highest ranked conference paper
  [pdf]
  Also: International Journal of Parallel Programming (IJPP), DOI 10.1007/s10766-007-0034-5, April 2007. [pdf]
  
  
• M. Welcome, C. Rendleman, L. Oliker, R. Biswas,"Performance Characteristics of an Adaptive Mesh Refinement Calculation on Scalar and Vector Platforms", ACM International Conference on Computing Frontiers, 2006.
  [pdf]
  
  
• J. Carter, L. Oliker,"Performance Evaluation of Lattice-Boltzmann Magnetohyrodynamics Simulations on Modern Parallel Vector Systems", Proceedings of the 2nd Teraflop Workshop, Stuttgard, Germany. Lecture Notes in Computer Science (LNCS), Springer, 2006. [pdf]
  
  
• L. Oliker, J. Carter, "Leading Computational Methods on the Earth Simulator", SIAM Conference on Parallel Processing for Scientific Computing, 2006
  
  
• L. Oliker, R. Biswas, R. Van der Wijngaart, D. Baily, A. Snavely, "Performance Evaluation and Modeling of Ultra-Scale Systems",Parallel Processing for Scientific Computing, SIAM Publication, Edited by Michael A. Heroux, Padma Raghavan, and Horst D. Simon, 2006.
  [pdf]
  
  
• L. Oliker, J. Carter, M. Wehner, A. Canning, S. Ethier, A. Mirin, G. Bala, D. Parks, P. Worley, S. Kitawaki, Y. Tsuda, "Leading Computational Methods on Scalar and Vector HEC Platforms", SC05, 2005.
  [pdf]
• Also: International Journal of High Performance Computing Applications, in press.
  [pdf]
  
  
• J. Shalf, S. Kamil, L. Oliker, D. Skinner, "Analyzing Ultra-Scale Application Communication Requirements for a Reconfigurable Hybrid Interconnect", SC05, 2005.
  [pdf]
  
  
• J. Carter, M, Soe, L. Oliker, Y. Tsuda, G.Vahala, L. Vahala, A. Macnab, "Magnetohydrodynamic Turbulence Simulations on the Earth Simulator Using the lattice Boltzmann Method", Gorden Bell Finalist, SC05, 2005.
  Gorden Bell Finalist
  [pdf]
  
  
• S. Kamil, J. Shalf, L. Oliker, D. Skinner, "Understanding Ultra-Scale Application Communication Requirements", IEEE International Symposium on Workload Characterization (IISWC) 2005.
  [pdf]
  
  
• S. Kamil, P. Husbands, L. Oliker, J. Shalf, K. Yelick, "Impact of Modern Memory Subsystems on Cache Optimizations for Stencil Computations", 3rd Annual ACM SIGPLAN Workshop on Memory Systems Performance (MSP) 2005
  [pdf]
  
  
• J. Borrill, J. Carter, L. Oliker, D. Skinner, R. Biswas, "Integrated Performance Monitoring of a Cosmology Application on Leading HEC Platforms",International Conference on Parallel Processing: ICPP 2005.
  Nominated: Best paper award
  [pdf]
  
  
• H. Simon, W. Kramer, W. Saphir, J. Shalf, D. Bailey, L. Oliker, et al, "Science Driven System Architecture: A New Process for Leadsership Class Computing", Journal of the Earth Simulator, 2005.
  [pdf]
  
  
• J. Carter, J. Borrill, L. Oliker, "Performance Characteristics of a Cosmology Package on Leading HPC Architectures",International Conference on High Performance Computing: HiPC 2004.
  [pdf]
  
  
• H. Shan, L. Oliker, R. Biswas, W. Smith, "Scheduling in Heterogeneous Grid Environments: The Effects of Data Migration", ADCOM2004: International Conference on Advanced Computing and Communication.
  [pdf]
  
  
• L. Oliker, A. Canning, J. Carter, J. Shalf, S. Ethier, "Scientific Computations on Modern Parallel Vector Systems", SC04, 2004
  Nominated: Best paper award
  [pdf]
  
• Also: Journal of the Earth Simulator, Volume 3, April 2005
  [pdf]
  
  
• L. Oliker, J. Borril, A. Canning, J. Carter, H. Shan, D. Skinner, R. Biswas, J. Djomheri, "A Performance Evaluation of the Cray X1 for Scientific Applications",VECPAR'04: 6th International Meeting on High Performance Computing for Computational Science, 2004.
  [pdf]
• Also: Lecture Notes in Computer Science, LNCS 3402, 2005
  
  
• G. Griem, L. Oliker, J. Shalf K. Yelick, "Identifying Performance Bottlenecks on Modern Microarchitectures using an Adaptable Probe",3rd International Workshop on Performance Modeling, Evaluation, and Optimization of Parallel and Distributed Systems (PMEO-PDS), 2004.
  [pdf]
  
  
• H. Shan, E. Strohmaier, L. Oliker, "Optimizing Performance of Superscalar Codes for a Single Cray X1 MSP", Proceedings of the 46th Cray User Group Conference:CUG 2004.
  
  
• P. Agarwal, et al, "Cray X1 Evaluation Status Report", Proceedings of the 46th Cray User Group Conference:CUG 2004.
  
  
• L. Oliker, J. Carter, "Evaluation of Vector Architectures for Scientific Codes", SIAM Conference on Parallel Processing for Scientific Computing, 2004.
  
  
• L. Oliker, M. Wehner, D. Parks, W.S. Wang, "High Resolution Atmospheric General Circulation Model Simulations on Vector and Cache-based Architectures", SIAM Conference on Parallel Processing for Scientific Computing, 2004.
  
  
• L. Oliker, G. Griem, "Transitive Closure on the Imagine Stream Processor",Fifth Workshop on Media and Stream Processors (MSP5) 2003.
  (with G. Griem)
  [pdf]
  

• L. Oliker, J. Carter, J. Shalf, D. Skinner, S. Ethier, R. Biswas, J. Djomehri, R. Van der Wijngaart, "Evaluation of Cache-based Superscalar and Cacheless Vector Architectures for Scientific Computations", SC03, 2003.
  [pdf]
  
• Also: Concurrency and Computation Journal: Practice and Experience. January 2005 [pdf]
  
  
• H. Shan, L. Oliker, R.Biswas "Job Superscheduler Architecture and Performance in Computational Grid Environments", SC03, 2003
  [pdf]
  
  
• S. Chatterji, J. Duell, M. Narayanan, L. Oliker "Performance Evaluation of Two Emerging Media Processors: VIRAM and Imagine", Workshop on Parallel and Distributed Image Processing, Video Processing, and Multimedia (PDIVM) 2003.
  [pdf]
  
  
• R. Biswas, L. Oliker, H. Shan, "Parallel Computing Strategies for Irregular Algorithms", Annual Review of Scalable Computing, April 2003.
  [pdf]
  
  
• B. Gaeke, P. Husbands, X. Li, L. Oliker, K. Yelick, and R. Biswas "Memory-Intensive Benchmarks: IRAM vs. Cache-Based Machines", International Parallel & Distributed Processing Symposium (IPDPS) 2002.
  [pdf]
  
  
• H. Shan, J. Singh, L. Oliker, R. Biswas, "Message Passing vs. Shared Address Space on a Cluster of SMPs", International Parallel & Distributed Processing Symposium (IPDPS) 2001.
  [pdf]
  
• Also: Parallel Computing Journal, Volume 29, Issue 2 , February 2003
  [pdf]
  
  
• L. Oliker. X. Li, P. Husbands, R. Biswas, "Effects of Ordering Strategies and Programming Paradigms on Sparse Matrix Computations", Siam Review Journal, 2002.
  [pdf]
  
  
• H. Shan, J. Singh, L. Oliker, R. Biswas, “Design Strategies for Irregularly Adapting Parallel Applications”, SIAM Conference on Parallel Processing, 2001.
  [abstract.ps]
  
  
• L. Oliker, R. Biswas, P. Husbands, X. L, “Ordering Sparse Matrices for Cache-Based Systems”, SIAM Conference on Parallel Processing, 2001.
  [abstract.ps]
  
  
• H. Shan, J. Singh, L. Oliker, R. Biswas, “A Comparison of Three Programming Models for Adaptive Applications on the Origin2000”, SC00, 2000.
  WINNER: Best student paper award
  [pdf]
  
• Also: Journal of Parallel and Distributed Computing, 2002
  [pdf]
  
  
• L. Oliker, A. Wong, W. Kramer, T. Kaltz, D. Bailey, “ESP: A System Utilization Benchmark”, SC00, 2000.
  [pdf]
  
  
• L. Oliker, X. Li, P. Husbands, R. Biswas, “Ordering Schemes for Sparse Matrices using Modern Programming Paradigms”, The IASTED International Conference on Applied Informatics (AI) 2001
  [pdf]
  
  
• L. Oliker, R. Biswas, “Multithreading for Dynamic Irregular Applications”, First SIAM Conference on Computational Science and Engineering, 2000.
  
  
• L. Oliker, X. Li. G. Heber, R. Biswas, “Parallel Conjugate Gradient: Effects of Ordering Strategies, Programming Paradigms, and Architectural Platforms”, 13th Interational Conference on Parallel and Distributed Computing Systems, 2000.
  [pdf]
  
  
• L. Oliker, A. Wong, W. Kramer, T. Kaltz, D. Bailey, “System Utilization Benchmark on the Cray T3E and IBM SP”, Fifth Workshop on Job Scheduling, 2000.
  [pdf]
  
  
• L. Oliker, X. Li, G. Heber, R. Biswas, “Ordering Unstructured Meshes for Sparse Matrix Computations on Leading Parallel Systems”, Seventh International Workshop on Solving Irregularly Structured Problems in Parallel, 2000.
  [pdf]
  
  
• L. Oliker, R. Biswas, “Multithreaded Implementation of a Dynamic Irregular Application”, 5th NASA Computational Aerosciences Workshop, 2000.
  
  
• L. Oliker, R. Biswas, S. Das, D. Harvey. “Parallel Dynamic Load Balancing Strategies for Adaptive Irregular Applications”, DRAMA special issue of Applied Mathematical Modeling Journal, 2000.
  [ps.gz]
  
  
• L. Oliker, R. Biswas, “Parallelization of a Dynamic Unstructured Application using Three Leading Paradigms”,SC99, 1999.
  (with R. Biswas)
  WINNER: Best paper of the conference award
  [pdf][ppt]
  
• Also: IEEE Transactions on Parallel and Distributed System, 2000.
  [pdf]
  
  
• L. Oliker, R. Biswas and H. Gabow, “Parallel Tetrahedral Mesh Adaptation with Dynamic Load Balancing”, Parallel Computing Journal, Special Issue on Graph Partitioning, 2000, pp 1583-1608.
  [pdf]
  
  
• R. Biswas, S.K. Das, and D.J. Harvey, L. Oliker, “Portable Parallel Programming for the Dynamic Load Balancing of Unstructured Grid Applications”, 13th International Parallel Processing Symposium, 1999.
  [pdf]
  
  
• R. Biswas, L. Oliker, “Experiments with Repartitioning and Load Balancing Adaptive Meshes”, Grid Generation and Adaptive Algorithms, IMA Volumes in Mathematics and its Applications, Vol. 113, Springer-Verlag, 1999, pp.89-112.
  [pdf]
  
  
• L. Oliker, R. Biswas, “PLUM: Parallel Load Balancing for Adaptive Unstructured Meshes (JPDC version)”,
  Journal of Parallel and Distributed Computing, 1998, pp.150-175.
  [pdf]
  
  
• K. Schloegel, G. Karypis, V. Kumar, R. Biswas, L. Oliker, “A Performance Study of Diffusive vs. Remapped Load-Balancing Schemes”, 11th International Conference on Parallel and Distributed Computing Systems, 1998, pp. 59-66
  [pdf]
  
  
• L. Oliker, “PLUM: Parallel Load Balancing for Adaptive Unstructured Meshes”,
  Ph.D. Dissertation, University of Colorado, Dept. of Computer Science, 1998 (Advisor Oliver McBryan)
  [pdf]
  
  
• L. Oliker, R. Biswas, H.N. Gabow, “Performance Analysis and Portability of the PLUM Load Balancing System”,
  Euro-Par'98 Parallel Processing, Lecture Notes in Computer Science, Vol. 1470, Springer-Verlag, 1998, pp. 307-317
  [pdf]
  
  
• L. Oliker, R. Biswas, “Dynamic Domain Decomposition for Large-Scale Adaptive Calculations”, 10th International Conference on Domain Decomposition Methods, 1997,
  (with R. Biswas.)
  
  
• L. Oliker, R. Biswas, “Load Balancing Unstructured Adaptive Grid Computations”, 4th U.S. National Congress on Computational Mechanics,
  1997,
  
  
• R. Biswas, L. Oliker, “Load Balancing Sequences of Unstructured Adaptive Grids”, 4th International Conference on High Performance Computing, 1997, pp. 212-217
  (with R. Biswas.)
  [pdf]
  
  
• R. Strawn, L. Oliker, R. Biswas, “New Computational Methods for the Prediction and Analysis of Helicopter Noise”, Journal of Aircraft, 34 (1997) pp. 665-672
  [ps.gz]
  
  
• L. Oliker, R. Biswas, “Efficient Load Balancing and Data Remapping for Adaptive Grid Calculations”, 9th ACM Symposium on Parallel Algorithms and Architectures, 1997, pp. 33-42
  [pdf]
  
  
• R. Biswas, L. Oliker, “Load Balancing Unstructured Adaptive Grids for CFD Problems”, 8th SIAM Conference on Parallel Processing for Scientific Computing, 1997
  [pdf]
  
  
• R. Biswas, L. Oliker. A. Sohn, “Global Load Balancing with Parallel Mesh Adaption on Distributed-Memory Systems”, SC96, 1996
  [pdf]
  
  
• L. Oliker, R. Biswas, S. Strawn, “Parallel Implementation of an Adaptive Scheme for 3D Unstructured Grids on the SP2”, Parallel Algorithms for Irregularly Structured Problems, Lecture Notes in Computer Science, Vol. 1117, Springer-Verlag, 1996, pp. 35-47
  [pdf]
  
  
• L. Oliker, R. Biswas, S. Strawn “Parallel Mesh Adaption with Global Load Balancing on the SP2”, NASA Computational Aerosciences Workshop, 1996.
  
  
• A.M. Wissink, A.S. Lyrintzis, R.C. Strawn, L. Oliker, R. Biswas, “Efficient Helicopter Aerodynamic and Aeroacoustic Predictions on Parallel Computers”, 34th AIAA Aerospace Sciences Meeting, 1996, AIAA Paper 96-0153
  
  
• S. Chatterjee, J. Gilbert, L. Oliker, R. Schreiber, and T. Sheffler, “Algorithms for Automatic Alignment of Arrays” Journal of Parallel and Distributed Computing. July 1996
  [ps.gz]